Constructing lid-hinges for sheet-metal receptacles.



G. W. BERRY.

CUNSTRUCTING LID HINGES FOR SHEET METAL RECEPTACLES APPLICATION FILEDAPR. 22. l9l6.

1,223,848. Patented Apr. 24,1917.

4 SHEETSSHEET I.

V INYENTOR:

George W Berry G w. BERRY.

CONSTRUCTING LID HINGES FOR SHEET METAL RECEPTACLES.

APPLICATION FILED APR.22,1916- 1,223,848. latcntcd Apr. 21-, 1917.

4 SHEETSSHEET 2.

, mvsmom Gcovy e W. B crry 'iB- h is Any. OW

George WBen ry 0.

G] W. BERRY.

CONSTHUCTING LID HINGES FOR SHEET METAL RECEPTACLES.

APPUCATIDN man APR. 22. 1916. 7 1,223,848, Patented Apr. 2-1, 1917. v 4SHEETS-SHEET a.

G w. BERRY. CONSTRUCTING LID HINGES FUR SHEET METAL RECEPTACLES.APPLlCATlON FILED APR. 22,1916.

1,223,848. Patented Apr. 2 1, 1917.

I 4 SHEETS-SHEET 4- mum G. W. :BERRY tles' formed integrallv upon the11d rim TED STATES PATENT OFFICE.

GEORGE WILLIAM BERRY, OF ROSE BAY, NEAR SYDNEY, NEW SOUTH WALES, AUS-TRALIA, ASSIGNOB TO THE WIRELESS HINGE MANUFACTURING COMPANY LIMITED,

01! SYDNEY, AUSTRALIA.

CONSTRUGTING LID-HINGES FOR SHEET-METAL RECEPTACTMQ To all whom it mayconcern:

Be -it known that I, Gnonen 'WILLIA M BERRY, a subject of the King ofGreat Br tain, residing in Rose Bay, near Sydney, in the State of NewSouth Wales, Commonjiwealth-of Australia, engineer, have invented "newand useful Improvements in Constructing Lid-Hinges for Sheet'MetalReceptacles, 01: which the following is a specification. r y

' This invention relates to the manufacture of pressed sheet metalreceptacles comprising a body portion formed with bulbed tongues and arimmed lid portion adapted to fit over the body portion with hingepinupon which pintles said bulbed tongues'are closed to form a wirelesshinge joint uniting said body and lid, The invention is applicable torectangular receptacles, or receptacles other than rectangular'havingone fiat side. v

The object of the invention is to provide commercially effective meanswhereby integral pintles may be produced with certainty by -bending andcutting the lid rim stock in a certain succession of die pressoperations, and to obviate the losses and avoid the failures hithertoencountered as a consequence of the bending die jumping and gripping thest'ockand mutilating it. It is necessary that the hinge pintles beuniform in dimensions and identical in form and shaped to fit rotatablyfree in the bulbs on thetongues which formpintle bearings. I

Minimum cost of manufacture is a primary consideration in the productionof sheet metal receptacles such as hinged lid tobacco boxes and thelike, and it is necessary thatvthe hinge members of such receptacles.shall be formed and engaged in a succession of automatic die pressoperations in order to minimize labor cost and insure rapid productionand uniformity of prodnot; The efiectiveness of each of the several diepress operations depends necessarily upon the effectiveness of thepreceding step. A failure in one step in the succession of operationswill necessarily involve difiiculties'in the succeeding steps, which mayinterfere-with thefeed of the press in which the operations areconducted, or may result in mutilation of the hinge members andSpecification of Letters Patent.

r'atented Apr. 24, 1917.

tion of the thin stock of the lid in an early operation of forming thelid, and the consequent impossibility of centering the slenderoverhanging partswhich were partially detached from the main part of thelid stock in such step with the result that the forming dies to bendthese parts to form pintles would grip and jump said slender overhangingparts and so deform'them that they were in a large proportion of casesmade useless as hinge members. Due to the said deformation of thepintles difiiculties arose in the final step of closing the bulbedtongues in the body stock around the pintles so as to leave said lidpintles free to turn in the bulbs of the tongues.

According to the said known method of I manufacturing integral wirelesshinge pintles on sheet metal receptacles in a compound die press, sparestock left on one rim of the lid in the lid-forming operation wasslotted back so as to leave two slender laterally projecting tongues onsaid stock. In a succeeding operation it was attempted to die roll orbend the depending stock and the tongues projecting laterally therefromso as to form therefrom a tubulous or fluted the lid rims in the lidforming operation,

to provide material for the hinge pintles. In the first die operation toform hinge pintles on the lid, the depending margin of the rim stock isdie rolled to a tubulous or V flutedsection, and in a succeedingoperation two or more slots, depend ing upon the number of hinge pintlesrequired, are made in the rim stock above the die rolled marginalportion thereof so as to form from the ad- 1nd, ting or ragging willtachcd ends of such marg a1 5. on will be rounded, 'tl'icrcby iueurin afree lit for the pint-lee in the hulbs'o' the tongues.

The accompanying explanatory drawings illustrate formed body and lid andthe hinge members in successive stages of their production. and fittingin a compound. die press, and they 'llustrate also the construction ofthe s and die blocks with their e..-

mqr parts in which the .iorm.- tting and closing operations :zted insuch vi to 7 are perspective views which gross of the manufacture of thehinge inf our stages. Figs. 1 and 2 show the body and lid as deliveredfor the making and fitting of integral. hinges thereon, Figs. 3 and 4,the same parts after the first die press operation, Figs. fiand 5 thesame parts after the second die press operation, and 'Fig. 7 the twoparts as fitted together in the third die press operation. In each diepress operation double punches and dies are used and the body and lidmembers are each operated on simultaneously at each successive movementof the punches.

stalled in a multi die press which. is fitted with means .fortransferring the Work in progress from the feed to the lirst die block,

4 thence at the completion of the first move ment of the press to thesecond die block, t h ence on the completion of the second mWement ofthe to the third die block, and thence ejecting the completed hingedmCBPtac-Ie out of the machine. The means iorconveyin the parts into andout of the machine an, for transferring them, from 'a block to die blocksuccessively theredoes not form part of the present inyenon. Figs. ,8and 9' are transverse sections through the first punch and die blockused in carryin out the present invention; as shown jbiil d. tongues andclearnace space are formed is the, receptacle 'body and the i depeg dingpart of the lid stock die rolled to form a tubulous or flutedcdge orfalse Wire- Fig. -8 shows the first operationpunchbeforc its descent,and Fig. 9 shows 50 said punch in the' closed positionon the die .jblockwith the formed mctalcontaincd be- 'tweeii' the punch and the die block.

Figs. l0'and 11 are corresponding views showmg the punch and die blockin. the next stepof the manufacture. In this step by the bulb'cdtongues.

Three sets of dies and punches are in- 1 ,cesgses rearward of the endsof the tubulous false wire to form same into pintles engageable Figs. 12and 13 are similar views illustrative of the last stage of themanufacture, in which the bulbed tongues are closed over the projectingpintle ends.

Fig. 1.4 is a perspective'view of the punch and die block for performingtheoperations indicated in Figs. 3, 4:, 8 and 9. Fig. 15 is a similarview of the punch and die block used for performing the operationsalready explained with reference to Figs..5, 6, 10,

and 11. Fig. 16 is a similar view of the die members for performing theoperation shown in Figs. 12 and 13. Fig. 17 is a rear side view of onemember of the top die shown in. Fig. 16. In Figs. 14, 15 and 16 the topdie is tilted over to expose its under face to facilitate descriptionthereof. Fig. 18 is a perspective view of the formingpunch, and dieblock used for producing a lid (Fig. 2) from fiat stock- Fig. 193s avertical section explanatory of the die press operation in'which the lidblanlr (Fig. 2) is produced by means of the punch and diev F ig. 18.

The numeral 10 designates a punch and die block for cutting and forminthe lids from fiat stock indicated by dotte line 10. The die block (seeFigs. 18' and 19) is formed of a stout block of metal having a deepgroove 11 formed vertically therein and corresponding with the lid shae; on one side of said groove two inward y rojecting hotch cutters 12are fitted.- he inner side of each of said cutters 12 is slightlyrecessed (13) and'the width of the mortise groove is greater betweenthese outtors than at its other parts. A drawing ring 14: is fittedslidably in the groove 11; and is a neat slidin fit over a forming block15; the shape 0 this block 15 is counterpart to the shape of the lidblahk to made.

The ring punch 16 is so shaped on its outer periphery that it Will runneatl into and completely fill the groove 11 in t a die block.

The outer ring of the die block is splayed "up for shearing at the edgeof the groove 11. When forming lids a sheet of stock is placed over thedie block and the punch dropped thereon. The ed es of the cut stock areforced downward ly arour the forming block 15 by the continued down lid,and same is ejected from the punch by the follower 18 wardly when thewhen it is pushed downpunch ring is nearing the 'limit of its upwardtravel. 20 is a rectangular sheet metal receptacle body which is shownby way of example but need not necessarily be of this or anyapproximately similar shape so long as it has one flat side. 21 is a lidfor said body, produced as already described. The back rim of this lidis made deeper between the notches 23 than its depth elsewhere; thecentrally disposed depending portion, 22 provides stock for theformation of hinge pintles.

The notches 23 extend more or less (see Fig. 2) into the rim stock abovethe depending part 22 and curve the ends of said depending part asshown.

In orderyto form a hinge, the receptacle body 20 is placed over one sideof a die block 24 (see Fig: 8) which is fitted on a bed 25, and the lidblank is set over the die block 26 on the opposite side of the said bed.The die'block 24 is formed with two protuberances 27 having their uppersurfaces and outer ends rounded off and their inner ends cut vertically.A counter-sink 28 extends from one protuberance 27 to the other. Thepunch 29 is fitted to a ram 30 and is are counterparts of theprotuberances27. A depressing piece 32 on the punch 29 sets into thecountersink 28 in the die block 24 when the punch is down.

When" the punch 29" descends on to the die block the wardly disposereceptacle body ('protuberances 27 form outbulbs 33 on the wall of theand the depressing piece 32 forms an inwardly disposed depression 28'between the bulbs.

' The inner edges of the countersinks 31 coacting with the square inneredges of the parts 27 shear vertical incisions 34 in the stock at theinner the forming operation. The slitting and form-in of the bulbs 33 isperformed simuland' the bulbs are thus finished with their adjacent endsopen to accommo date the bin e pintles on the lid (see Fig. 3): The lidie block 26 is formed with a longitudinally disposed rib 36 of the samea 36. he rib 38 length as or slightly longer than the depend- 111gportion 22 of the lid rim. The top punc posed drawin I ribs 38 and 39,with intervenmg oove w ich is counter-part. to the rib rib 39 and as thepunch descends the said rib 38 bends. the edge part of the dependingformed with countersinks 31 which.

ends of said bulbs 33 in 37 is formed with two parallelly di sis placedis slightly deeper than the.

portion 22 of the'lid rim over the inner ed e I of the rib 36 before therib 39 bears on t 6 upper part of the depending portion. ofthe lid. Thebending and pinching of the edge ings. The ribs 38 and '39 set intoshallow countersinks' 40 and 41- in the die block. Hinge pintles areformed in a later operation by slotting out stock rearward of thetubular or fluted edge. The body and lid are now removed to the seconddie blocks 43 and 44, respectively. The die block 43 is mounted on a bed45. It carries two forrm ing cutters 46 of angular shape in crosssection and rectangular in' plan. Their inner faces are vertical andtheir outer faces chamfer forwardly from the'upper face. Thesespreading-cutters 46 are located on the die block 43 so they set beneaththe bulbs 33 on the receptacle body. The punch 47 is carried on a ram 48and rectangular recesses 49 are formed in said punch face 47 to alinewith the cutters 46 and slit the Stock in the ck of the receptacle.body-- ng he upper sides and downward slightl The beyond the outer endsof the bulbs. rectangular pieces of metal bounded by the slits so madeare pressed, outwardly from the back of the receptacle body in the clos-I ing of the punch 47 forming bulbed tongues see Figs. 5 and 11 of thedrawing. A

pocket 51 is formed in the face of the die block 43, (see Fig. 15) toaccommodate-the depressed portion 28' on-the back of the receptaclebody.

The die block 44 on the opposite side of the bed 45 is mortised asterpart to punches 53. The said punches 53 slot opt portions 54 of thelid stock as The ram 48 is fitted with a spring controlled strippersaddle 56 shaped to accompunches 53. A recess 58 formed v in thestripper 56 accommodates the central" modate the portion of the bentmargin 42 on. the back of the lid. When the stock 54 has been removedand the bulbed tongues have been raised as shown in Figs. 5 and 11, theram 48 Is,

raised and the receptacle body and lid are removed from the die block. i

The body is then placed over :the vertical side of the closing die block59 and the lid on the opposite side of' the said die shown'at152counblock inclining toward the back (if the-body,

so that the pintles 55 come directlybeneath the bulbs 33 which are thenclosed over the 12 and 13).

The punch of the closing die is formed in two parts, one-part 61 beingfixed in the ram and the other part 62 being slidable against backingsprings 63. The slide 62 ,normally projects below the fixed part 61,

and as the ,punch descends the two parts 61 and 62 are brought to hearone on either side of the bulbous part oftheraised tongues and set thesaid tongues back into their original positions now inclosing pintles55. The contiguous lower corners of the two parts of the closing punch60 are corner fluted as at 64: to permit of the punch coming hard homeWithout injuring the bulbs 33, the false wire 42 or the pintles 55. a

The fixedpart 61 of the closing punch is.

formed with depending projections 6i which are adapted to pass throughthe slots 65 on the lid stock. The faces of the depending of said rimstock to form a tubulous or fluted edge thereon, and secondly slottingback said stock rearward of said tubulous edge, thereby forming pintlesengageable by said body tongues.

3. An improved process of hingedly connecting a run lid to a rece taclebody con:

structed in sheet metal, w ich consists in forming the lid with acentraily disposed depending portion on one of the rims thereof, bendingthe marginal portion of said depending stock to a tubiilous or iiutededge projections 64 approximate in size to the and thereafter formingpintles from the outer endsof the bulbed tongues, and bear upon theupper sides and rounded ends of the said bulbs. 1

The closing die block 59 is formed with a central depression 66 toaccommodate the depressed portion 28 on the back of the re ceptaclebody, and in the face of the said die'block at the, endsof thedepression 66 are recesses 67.shaped to receive the edges of the stockfrom which the pintles are formed.

' The bulbs 33, when the tongues are closed, are sufliciently large topermit free pivotal movement of the intles 55 when the lid is beingopened an closed. The object in rounding off the points of the dependingstock 22 from which the false wire 42 is formed is to remove and preventsubsequent formation of bur or rag and so insure for said pintles freemovement in the said bulbs.

In the old process of forming the lid pintles referred to a largepercentage of the,

intles'were deformed with the result that 1t was impossible to neatlyinclose said pintles by the bulbed tongues, and when the tongues wereclosed upon such deformed pintles it was impossible to open the lidswithout straining or distorting the hinges,

When a hingeis mutilated in manufacture and is strained or buckled inopening the lid it is im ossible to again close the lid tubulous orfluted section, slotting out rim stock rearward of the tubularly bentmargin thereof thereby leaving portions of said tubulous or flutedmargin to form pintles, po-

ends of said tubulous or fluted lid edges by cutting away portion of thelid stock above and around the ends of the same: forming two 0 on endbulbs on the back of the receptacle ody, slitting the body stock overthe top andouter ends of each of said buibs and then bending the stockbounded by said in-' clsions outwardly tov form bulbed tongues,introducing said gintles beneath said bulbs, and inclosing sai tonguesover said pintles.

4. An improved process of hingedly con necting a receptacle body and arimmed lid therefor constructed of sheet metal, consisting in forming)the lid with a depending portion on the ack rim thereof, then formmg abent edge on the margin of said depending portion, subsequentlyproducing p'intles at the ends of said bent edge by slotting outportions of the rim above the ends of the same, formin bulbed tongues onthe back of the receptac e body, and finally inclosing said tongues oversaid pintles.

5; A process for hingedly connecting a" sheet metal receptacle body andrimmed lid, which consists in producing bulbed tongues on said bodyportion, forming one rim of the lid with a depending ortion terminatedby. curved notches exten ing into the rim stock above saidde endingportion thereof,

bending the depen 'ng portion of the rim stock to a, tubulous or uted'sectiom'slotting out -rim stock rearward of the tubularly bent marginthereof inward from the beforementimed notches at the? ends thereof;thereby leaving the end portions of said tubulous or fluted marginsrojecting toform pintles, introducing sai pintles-into said bulbedtongues, and inclosing said-bulbed tongues thereon. r a i 6. The hereindescribed improvement in the manufacture of sheet metal reoe tacles withrimmed lids hingedly attached ereto by intles which are formed in thelid rim stool; and are embraced by bulbous tongues on the body member,which consists of the following named operations in successiveorder:firstly, forming one rim of the" lid with 3 depending portion'terminated by curved notches extending into the rim stoc above saiddepending portion thereof, bending the dependin portion of the rim stockto a tubulous or. uted section, slotting out rim stock rearward of thetubularly bent margin thereof inward from the beforementioned notchesat' the ends thereof, thereby leaving portions of said tubulous orfluted m 'n to form pintles, and introducing said pint es into saidbulbous tongues and inclosmg s'aid bulbous tongues thereover.

The herein described improvement in the manufacture of sheet metalboxeswith go rimmed lids hingedly attached thereto by pintles formedintegral with the lid rim,

thereby formin which process consists in the following named operationsin successive order firstly cutting two curved notches at the ends of adependm margin in the stock on one side of the li such notc es, therebyformin a tubulous or fluted ed thereon; and t 'rdl slotting back sai rimflock adjacent 0th said on t e body portion of the receptacle.

In testimony whereof I have signed my rim; secondly, bendingthedepending margin of the rim stock between into projecting pintlesname to this specification in the presence of two subscribin witnesses.

' GEO GE WILLIAM BERRY. Witnesses:

A. J. Gunman, Amman E. BROWN.

